Paper-calendering machine



(No Model.) 2 SheetsSheet 1.

J McLAUGI-ILIN. .v PAPER GALENDERING MACHINE;

Patented Sept. 17, 1889..

(110 Model.) 2 eeeeeee Sheet 2. 7

J. MGLA HLIN.

PAPER UALEND RI G MACHINE.

110.411.051. Patented Sept. 1'7,'1889..

six rolls there will be seven nips.

UNITED STATES I PATENT OFFICE.

JOHN MCLAUGHLIN, OFLEE, MASSACHUSETTS.

PAPER-CALENDERlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 411,051, datedSeptember 17, 1889.

Application filed July 13, 1888.

To all whom it may concern.-

Be it known that I, JOHN MOLAUGHLIN, a citizen of the United States,residing at Lee, in the county of Berkshire and State of Massachusetts,have invented certain new and useful Improvements in Paper-CalenderingMachines; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this specification.

My invention relates to paper-making machines, more particularly tocalendering-machines, and has for its object to so construct the machineand combine its rolls that the paper can pass between them in such amanner as to receive at least four nips in its travel between them.Under my arrangement of the, rolls and manner of passing the paperbetween them,if six rolls be employed there will be seven nips on thepaper; if eight rolls be employed, ten nips, and so on as the number ofrolls employed may be greater.

Heretofore the rolls have generally been arranged one above the other inan upright frame, so that if there were employed five rolls there wouldbe only four nips on the paper, or, in other words, there would alwaysbe one nip less than the number of rolls employed, whereas under myarrangement there will not be fewer nips than the number of rollsemployed, and when more than a certain number of rolls are used therewill be more nips than rollersfor instance, with The advantage andimportance of my arrangement of rolls, permitting the particular mannerindicated of passing the paper between them, will thus be apparent toand appreciated by those skilled in the art.

The invention will now be described in detail, reference being had tothe accompanying drawings, forming a part hereof, and in Which- Figure 1is a side elevation of a frame, termed horizontal frame to distinguishit from a vertical frame, in which rolls as here- Serial lie-279,874.

. ings.

(No model.)

tofore arranged have been supported. Fig. 2 is a front elevation of thesame with a portion of the frame in section. Fig. 3 is a crosssectionthrough the same.

In the drawings, the letter A designates a frame of any suitable form orshape in crosssection, and preferably so constructed, that its top A maybe removable, the same resting upon the upright portions of the frameand formed with flanges d, fitting down around the upright portions, soas to prevent the top from slipping or moving laterally. In this frameare journaled four or'more rolls- B and 0, six being illustrated in thedraw- These rolls are shown as arranged in sets of two, so as to bringone roll of each set above the other and each set forward or in advanceof the other. The lower rolls fit in sectionalor segmental journal-boxes D, which are capable of sliding on the lowerpart of theframe, and are adjustable toward each other to regulate the pressure onthe paper by means of set-screwsor hand-bolts E, passed through theupright portions of the frame and made to bear against said boxes, asshown. The upper rolls are shown as resting upon the lower ones, andtheir journals fit in sectional or segmental boxes D. These rolls areadjusted horizontally by the set-screws or handbolts E, which passthrough the upright portions of the frame and bear against the boxes,and the downward pressure of these rolls on the lower rolls is regulatedby the set-screws or hand-bolts F, passed through the top of the machineand made to bear against the top of the boxes. The portions of the framethrough which the set-screws or bolts pass are preferably made heavierthan the other portions, as shown at b, for the purposes of increasedstrength, while the other portions, for lightness and economy of metal,maybe channeled or otherwise lightened, as illustrated.

The paper to be calendered will be introduced between the rolls B and Cat the point indicated by the arrow 1, and after passing between themwill pass down between the rolls 0 and B in the lower part of the frame,thence under roll B and up between it and the next lower roll 0, thenceover the lower roll 13 and backward between it and the up per roll 0,thence upward and between said roll and the front roll B, thencerearward over the upper roll 0 and downward between it and the lastupper roll B, and thence rearward between said roll and the last lowerroll C, as indicated by the several arrows.

It will thus be seen that the paper is passed between two sets of rollsin a direction or course that causes it to pass between four rolls ofthe two sets at four different points,

[0 thus imparting as many nips to the paper. This manner of passing thepaper between the rolls obtains the maximum number of nips or points ofcontact or compression between the four rolls, and to that extentlessens the time and labor to properly calender the paper. It will alsobe observed that the same statement is true and equally applicable towhichever two sets of the series of rolls it may have refereneethat isto say, the

intermediate set of rolls may be used in connection with the first setof rolls or with the second set of rolls to make the two sets composedof four rolls, and whichever is used the four points of contact will beobtained, al-

2 5 though the paper may pursue a somewhat different line of travel. Thesame is true no matter how many rolls more than four are used, and so itwill be undersood that I am not limited in the number of rolls or setsof 0 rolls employed. For the same reason it will be seen that myinvention includes, broadly, such an arrangement of rolls as will givefour points of contact or four nips between four rolls; but I very muchprefer the horizontal 3 5 arrangement, as illustrated, because the rollsare brought under better control of the at tendant and are easier tomanipulate.

The last roll of the series will have applied to it thestripping-fingers G, extending from the blocks II, to which areconnected the ad justable weights I, and tapes J may be employed forcarrying the paper from the rolls to a receptacle below provided for it.The fingers and tapes will operate as described in my patent, No.242,550, dated June 7, 1881, and need not, therefore, be moreparticularly described.

Doctors K may be arranged at suitable points, as illustrated in Figs. 1and 3, so as to direct the paper to its place between the rolls, asshown. These doctors will consist of sheets or plates of metal-saysteel-extendin g the width of the rolls, and may be suitably pivoted bypins or rods L to the sides of the ma- 5 5 chine.

The rolls may be operated in any wellknown way in whichcalemlering-rolls are now commonly operatedfor instance, by powerapplied from any suitable source to one of the rolls throughapulley.(Shown by dotted lines in Fig. 2 of the drawings.)

1 do not claim herein what I regard as my method of passing the paperbetween the rolls, so as to obtain the maximum number of nips out of therolls, as the same forms the subjeet-matter of a separate applicationfiled by me July 13, 1888, Serial No. 279,873.

Having described my invention and set forth its merits, what I claimis- 1. In a paper calendcring machine, the combination of a series ofcalender-rolls arranged in sets, with each four rolls of the series inproximity and opposite to one another, substantially as described, toform double rows with four points of contact between each four rolls ofthe series, substantially as and for the purposes described.

2. In a calendering-machine, the combination of a series ofcalender-rolls arranged in horizontal sets, with two rolls in each setand one roll of each set over its mate, the rolls of the sets beingcontiguous to each other and to the rolls of the next set, to form fourpoints of contact between each four rolls of the scries, substantiallyas and for the purposes described.

3. In a calendering-machine, the combination of a series ofcalender-rolls arranged in horizontal sets and IllOX'ZtblG toward eachother, movable journal-boxes for the journals of the rolls, andset-serews for adjusting said boxes and rolls horizontally, whereby thepressure between the rolls can be regulated, substantially as and forthe purposes described.

4:. In a calendering-machine, the combination of a series ofcalender-rolls arranged in horizontal sets, movable j on rnal-boxes forthe journals of the roll and set-screws bearing vertically andhorizontally against said boxes for adjusting the boxes bothhorizontallyand vertically to regulate the pressure between the rolls,substantially as and for the purposes described.

In testimony whereof Iaffixmy signature in presence of two witnesses.

J OIIN ltlcLAUGIILIN. \Vitnesses:

JAMES MCLAUGHLIN, EDWARD L. CHILDS.

